Internals and C language interface
- perlembed - how to embed perl in your C program
- perldebguts - Guts of Perl debugging
- perlxs - XS language reference manual
- perlxstut - Tutorial for writing XSUBs
- perlclib - Internal replacements for standard C library functions
- perlguts - Introduction to the Perl API
- perlcall - Perl calling conventions from C
- perlapi - autogenerated documentation for the perl public API
- perlintern - autogenerated documentation of purely internal Perl functions
- perliol - C API for Perl's implementation of IO in Layers.
- perlapio - perl's IO abstraction interface.
- perlhack - How to hack at the Perl internals
